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Valve cleaning on 2015 ecotec

Re: Valve cleaning on 2015 ecotec

Postby chev-mekanik » Mar 28 2016, 5:47pm

OilFracker wrote:If I remove my intake some weekend to get a good visual on the intake valves and snap some pictures......is it mandatory/recommended to replace the intake gaskets? Or are they reuseable? "All Data DIY" says to replace them......but it isn't clear on if it is mandatory or not.

I have over 100,000 miles on my '14 5.3L EcoTec so far. I only installed a catch can just before reaching the 100,000 mile mark.



If you take the intake off at that mileage do manual valve cleaning, all you need is a chemical softener and some wire brushes for your drill, air compressor or a good shop vac for clean up.
There is good videos on YouTube for reference.
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Re: Valve cleaning on 2015 ecotec

Postby mandinga [OP] » Mar 28 2016, 7:10pm

I would like to see a piture of your valves after 100 000 miles of use. Curious as to how much crud actually gets on there.
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Re: Valve cleaning on 2015 ecotec

Postby OilFracker » Mar 28 2016, 7:22pm

I believe these DI engines are darn good designs from what I am seeing and hearing so far. DI is here to stay for awhile I believe.

The GM 3.6L V6 has been DI since 2009.....and it's been used in several GM models. They are decent little engines if the water pumps would stop failing.

It would be nice if GM put the catch cans on from the factory however....but I'm sure the tree hugging hippie liberal lobbyists would have a temper tantrum about that.
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Re: Valve cleaning on 2015 ecotec

Postby RSELBY » Nov 10 2017, 5:38pm

Have you had any bad side effects of doing the valve cleaning , I was wanting to do same and was told not to use the GDI cleaners and that they can cause issues, I have a RX speedworks CC waiting to be installed and was going to do some cleaning ( with GDI valve cleaner spray ) and now im sorta confused on to do it or not
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Re: Valve cleaning on 2015 ecotec

Postby MIKE91B » Nov 10 2017, 11:28pm

I have tried a bunch of stuff. On my truck. I know some of the methods are frowned upon but oh well. The best way I have found to clean valves is yanking the intake manifold and rolling the engine over by Hand until the intake valve is closed then add gm’s Fuel injector and upper combustion cleaner2-4 oz usually covers the crap section. Let it sit for 30-45 minutes. Then suck the fluid out and use long q-tips and plastics bristled brushes to remove any build up. Simple and easy. We do this on the 3.6l all the time.
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Re: Valve cleaning on 2015 ecotec

Postby MIKE91B » Nov 11 2017, 12:00am

And as for wheather or not to use the typical combustion cleaners or not. They work just fine in my experiance. I have freed many stuck rings with this method and soaking combustion chambers through the spark plug holes. Just make sure you get all the cleaner out before you put the plugs back in. As many of the 2.4l piston jobs as I have done and have yet to EVER see cylinder wall damage from massive carbon build ups. The idea that this build up could be broken up and scare cylinder walls is ludicrous in my mind. If this build up is not harder than the cylinder walls relative to the hardness scale it won’t do a thing.
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Re: Valve cleaning on 2015 ecotec

Postby mandinga [OP] » Nov 11 2017, 12:52am

I have done the seafoam aerosol twice on my truck. I have a can ready to go before my next oil change. There is no damage that I can notice. But then again, how would I know. Truck currently has 70 000km on it.
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Re: Valve cleaning on 2015 ecotec

Postby MIKE91B » Nov 11 2017, 2:02am

This DI combustion chamber scare tactics have me worried none. Show me damage and any real evidence of a failure.
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Re: Valve cleaning on 2015 ecotec

Postby yamazippy » Nov 13 2018, 11:11pm

OilFracker wrote:If I remove my intake some weekend to get a good visual on the intake valves and snap some pictures......is it mandatory/recommended to replace the intake gaskets? Or are they reuseable? "All Data DIY" says to replace them......but it isn't clear on if it is mandatory or not.

I have over 100,000 miles on my '14 5.3L EcoTec so far. I only installed a catch can just before reaching the 100,000 mile mark.



Have you had any problems? I just rolled 102k on my truck the other day and after reading some how to's in here I'm ready to install a CC on my '14. But I want to clean the valves as well. Thanks in advance.
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